Question

Anhydrous $AlC{l}_3$ is covalent however when it is dissolved in water hydrated ionic species are formed. This transformation is owing to:

• A. the trivalent state of Al
• B. the large hydration energy of $A{l}^{3+}$
• C. the low hydration energy of $A{l}^{3+}$
• D. the polar nature of water

Answer 1

The correct option is B the large hydration energy of $A{l}^{3+}$

When $AlC{l}_3$ dissolves in water, it dissociates into cation and anion. And due to hydration of these ions compound; it dissolves in water so this happens due to large hydration energy of ions.